Stock watch: 2011 class one for ages

Updated: April 13, 2011, 1:41 PM ET
By Jason A. Churchill

There's been some talk this spring about the depth and overall strength of the 2011 draft class and it appears to get better every week as several prep kids prove their worth with plus tools and unusual levels of consistency, and the college crop rolls along led by No. 1 overall prospect Gerrit Cole and several other frontline arms.

In this week's stock watch, we'll focus on groups rather than particular players.